cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-10 of 13 results. Next

A030414 Position of n-th 0 in A030413.

Original entry on oeis.org

7, 14, 25, 26, 39, 48, 54, 57, 59, 60, 76, 77, 80, 83, 93, 99, 101, 102, 104, 108, 110, 117, 119, 127, 128, 131, 138, 145, 151, 154, 156, 159, 162, 164, 172, 174, 178, 179, 186, 191, 197, 198, 200, 206, 208, 210, 212, 214, 219, 223
Offset: 1

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  • Mathematica
    Flatten[Position[Rest[Flatten[IntegerDigits[#,4]&/@ Fibonacci[ Range[ 40]]]],0]] (* Harvey P. Dale, Jun 18 2013 *)

A030415 Position of n-th 1 in A030413.

Original entry on oeis.org

1, 4, 5, 9, 10, 11, 12, 17, 19, 20, 22, 24, 30, 31, 32, 35, 37, 43, 46, 51, 55, 58, 61, 62, 63, 64, 65, 68, 71, 79, 81, 82, 87, 94, 97, 98, 103, 106, 107, 109, 111, 112, 114, 120, 126, 130, 133, 135, 136, 140, 143, 148, 149, 160, 161, 168
Offset: 1

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Programs

  • Mathematica
    Rest[#-1&/@Flatten[Position[Flatten[IntegerDigits[#,4]&/@Fibonacci[ Range[40]]],1]]] (* Harvey P. Dale, Jun 06 2011 *)

A030416 Position of n-th 2 in A030413.

Original entry on oeis.org

2, 6, 13, 15, 21, 23, 28, 29, 34, 36, 38, 40, 44, 47, 52, 53, 56, 66, 67, 69, 72, 73, 74, 78, 84, 88, 95, 100, 105, 115, 116, 121, 129, 134, 144, 146, 152, 155, 157, 158, 163, 165, 166, 171, 190, 192, 202, 205, 215, 218, 225, 234, 237
Offset: 1

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A030417 Position of n-th 3 in A030413.

Original entry on oeis.org

3, 8, 16, 18, 27, 33, 41, 42, 45, 49, 50, 70, 75, 85, 86, 89, 90, 91, 92, 96, 113, 118, 122, 123, 124, 125, 132, 137, 139, 141, 142, 147, 150, 153, 167, 169, 175, 176, 182, 185, 188, 189, 196, 201, 204, 207, 209, 211, 213, 217, 220
Offset: 1

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Cf. A030413.

A030418 Least k such that the base 4 representation of n begins at s(k), where s=A030413.

Original entry on oeis.org

1, 2, 3, 24, 4, 1, 17, 6, 21, 28, 2, 75, 3, 27, 41, 24, 79, 82, 130, 81, 9, 4, 31, 5, 20, 51, 1, 136, 17, 32, 140, 100, 53, 13, 6, 23, 29, 21, 202, 52, 28, 72, 73, 74, 2, 280, 40, 75, 92, 150, 137, 125, 3, 42, 16, 189, 33, 27, 276, 91, 41, 188
Offset: 1

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A030419 Length of n-th run of digit 0 in A030413.

Original entry on oeis.org

1, 1, 2, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 3, 1, 2, 1, 1, 1, 1, 3, 2, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 1, 1, 1, 1, 2, 2, 1, 1
Offset: 1

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A030420 Length of n-th run of digit 1 in A030413.

Original entry on oeis.org

1, 2, 4, 1, 2, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 5, 1, 1, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 1, 1, 2, 2, 1, 3, 1, 1, 1, 1, 1, 2, 1, 1, 1, 3, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 4, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1
Offset: 1

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Programs

  • Mathematica
    Length/@Select[Split[Rest[Flatten[IntegerDigits[#,4]&/@Fibonacci[Range[100]]]]],#[[1]]==1&] (* Harvey P. Dale, Aug 03 2024 *)

A030421 Length of n-th run of digit 2 in A030413.

Original entry on oeis.org

1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 3, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 2, 2, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1
Offset: 1

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A030422 Length of n-th run of digit 3 in A030413.

Original entry on oeis.org

1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 2, 4, 1, 1, 1, 4, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 4, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 2, 2, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 4
Offset: 1

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Cf. A030413.

A030423 a(n)=(# 1's)-(# 0's) in first n terms of A030413.

Original entry on oeis.org

1, 1, 1, 2, 3, 3, 2, 2, 3, 4, 5, 6, 6, 5, 5, 5, 6, 6, 7, 8, 8, 9, 9, 10, 9, 8, 8, 8, 8, 9, 10, 11, 11, 11, 12, 12, 13, 13, 12, 12, 12, 12, 13, 13, 13, 14, 14, 13, 13, 13, 14, 14, 14, 13, 14, 14, 13, 14, 13, 12, 13, 14, 15, 16, 17, 17, 17, 18, 18, 18
Offset: 1

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Showing 1-10 of 13 results. Next