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 34 results. Next

A030379 Length of n-th run of digit 0 in A030373.

Original entry on oeis.org

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

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A030374 Position of n-th 0 in A030373.

Original entry on oeis.org

5, 13, 21, 29, 30, 32, 35, 38, 42, 54, 66, 77, 78, 80, 83, 86, 90, 102, 114, 125, 126, 128, 131, 134, 138, 150, 162, 173, 174, 175, 177, 178, 181, 182, 185, 186, 189, 191, 193, 197, 201, 205, 207, 209, 213, 217, 221, 223, 225, 229
Offset: 1

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A030375 Position of n-th 1 in A030373.

Original entry on oeis.org

1, 4, 6, 7, 8, 10, 15, 23, 28, 31, 33, 34, 37, 40, 41, 43, 44, 45, 46, 47, 49, 50, 52, 55, 57, 58, 61, 64, 67, 69, 70, 73, 81, 89, 92, 93, 95, 98, 105, 117, 129, 137, 140, 141, 143, 146, 153, 165, 172, 176, 179, 180, 184, 188, 190, 192
Offset: 1

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A030376 Position of n-th 2 in A030373.

Original entry on oeis.org

2, 9, 12, 14, 16, 17, 18, 25, 36, 48, 53, 56, 59, 60, 62, 72, 76, 79, 82, 84, 85, 88, 91, 94, 96, 97, 100, 101, 103, 104, 106, 107, 108, 109, 110, 112, 115, 118, 120, 121, 132, 144, 149, 152, 155, 156, 158, 168, 183, 199, 206, 210, 214
Offset: 1

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A030377 Position of n-th 3 in A030373.

Original entry on oeis.org

3, 11, 19, 20, 22, 24, 26, 27, 39, 51, 63, 65, 68, 71, 74, 75, 87, 99, 111, 113, 116, 119, 122, 123, 124, 127, 130, 133, 135, 136, 139, 142, 145, 147, 148, 151, 154, 157, 159, 160, 161, 163, 164, 166, 167, 169, 170, 171, 187, 203
Offset: 1

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A030378 Least k such that base 4 representation of n begins at s(k), where s=A030373.

Original entry on oeis.org

1, 2, 3, 4, 6, 1, 10, 12, 9, 16, 2, 20, 3, 11, 19, 28, 4, 34, 37, 33, 6, 7, 49, 52, 8, 15, 1, 64, 50, 10, 73, 76, 53, 12, 85, 36, 48, 14, 9, 84, 59, 16, 17, 112, 2, 110, 18, 124, 65, 113, 20, 3, 39, 51, 22, 11, 71, 99, 24, 19, 26, 74, 122, 172
Offset: 1

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A030380 Length of n-th run of digit 1 in A030373.

Original entry on oeis.org

1, 1, 3, 1, 1, 1, 1, 1, 2, 1, 2, 5, 2, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 2, 2, 3, 2, 3, 7, 3, 2, 2, 3, 2, 2, 2, 3, 2, 1, 1, 2, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1
Offset: 1

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Programs

  • Mathematica
    Length/@Select[Split[Flatten[IntegerDigits[Range[200],4]]],MemberQ[#,1]&] (* Harvey P. Dale, Dec 30 2018 *)

A030381 Length of n-th run of digit 2 in A030373.

Original entry on oeis.org

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

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A030382 Length of n-th run of digit 3 in A030373.

Original entry on oeis.org

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

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Extensions

a(89) onward corrected by Sean A. Irvine, Mar 31 2020

A030383 (# 1's)-(# 0's) in first n terms of A030373.

Original entry on oeis.org

1, 1, 1, 2, 1, 2, 3, 4, 4, 5, 5, 5, 4, 4, 5, 5, 5, 5, 5, 5, 4, 4, 5, 5, 5, 5, 5, 6, 5, 4, 5, 4, 5, 6, 5, 5, 6, 5, 5, 6, 7, 6, 7, 8, 9, 10, 11, 11, 12, 13, 13, 14, 14, 13, 14, 14, 15, 16, 16, 16, 17, 17, 17, 18, 18, 17, 18, 18, 19, 20, 20, 20, 21, 21, 21
Offset: 1

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Showing 1-10 of 34 results. Next