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 1-3 of 3 results.

A055144 The first n digits of the juxtaposition of the base-3 numbers converted to decimal.

Original entry on oeis.org

1, 5, 16, 48, 145, 436, 1309, 3929, 11789, 35367, 106103, 318310, 954932, 2864798, 8594395, 25783185, 77349555, 232048666, 696145998, 2088437995, 6265313986, 18795941958, 56387825876, 169163477629, 507490432888, 1522471298664
Offset: 1

Views

Author

Patrick De Geest, Apr 15 2000

Keywords

Examples

			1 (1); 12 (5); 121 (16); 1210 (48); 12101 (145); 121011 (436); ...

Crossrefs

Cf. A054635, A054637, A055072, A055073, A055143-A055150.

A055072 Primes in A054637.

Original entry on oeis.org

3, 5, 7, 11, 13, 19, 29, 31, 37, 41, 43, 47, 59, 61, 79, 83, 89, 97, 103, 109, 113, 127, 131, 137, 139, 151, 157, 163, 179, 181, 191, 193, 223, 227, 239, 241, 257, 263, 281, 283, 307, 311, 313, 331, 337, 347, 349, 353, 367, 373, 383, 397, 409, 419, 433, 439
Offset: 1

Views

Author

Patrick De Geest, Apr 15 2000

Keywords

Examples

			012101112202122100101102110111112120121122200201...
--|..... sum 0+1+2 = prime 3
-----|.. sum 0+1+2+1+0+1 = prime 5
-------| sum 0+1+2+1+0+1+1+1 = prime 7

Crossrefs

Cf. A054637, A055073, A055059-A055074.

Extensions

Offset changed by Georg Fischer, Sep 02 2022

A055074 Pointers to base-2 digits where primes occur in A054633.

Original entry on oeis.org

3, 4, 5, 7, 8, 9, 12, 17, 19, 20, 21, 22, 29, 30, 33, 39, 47, 49, 64, 65, 71, 72, 76, 77, 83, 91, 102, 103, 106, 113, 114, 115, 120, 122, 129, 142, 155, 156, 157, 173, 174, 175, 179, 180, 185, 186, 193, 194, 197, 198, 203, 204, 225, 233, 245, 249, 264, 265, 267
Offset: 1

Views

Author

Patrick De Geest, Apr 15 2000

Keywords

Examples

			01101110010111011110001001101010111100110111101111...
--|.... sum 0+1+1 = prime 2 at position 3
---|... sum 0+1+1+0 = prime 2 at position 4
----|.. sum 0+1+1+0+1 = prime 3 at position 5
------| sum 0+1+1+0+1+1+1 = prime 5 at position 7

Crossrefs

Cf. A000040, A055059-A055073.
Showing 1-3 of 3 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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