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.

A277699 Main diagonal of A277320: a(n) = A048720(n, A065621(n)).

Original entry on oeis.org

1, 4, 9, 16, 57, 36, 49, 64, 209, 228, 217, 144, 233, 196, 225, 256, 801, 836, 809, 912, 793, 868, 785, 576, 1009, 932, 1017, 784, 969, 900, 961, 1024, 3137, 3204, 3145, 3344, 3193, 3236, 3185, 3648, 3217, 3172, 3225, 3472, 3241, 3140, 3233, 2304, 3937, 4036, 3945, 3728, 3929, 4068, 3921
Offset: 1

Views

Author

Antti Karttunen, Nov 01 2016

Keywords

Links

Crossrefs

Cf. A000290, A023758, A048720, A065621, A277320.
Cf. A277704, A277706 (the positions of squares/nonsquares in this sequence).
Cf. A277805 (nonsquares in the order of appearance).

Programs

Formula

a(n) = A277320(n,n) = A048720(n, A065621(n)).
For n > 1, a(A023758(n)) = A000290(A023758(n)).

A277704 Positions of squares in A277699.

Original entry on oeis.org

1, 2, 3, 4, 6, 7, 8, 12, 14, 15, 16, 24, 28, 30, 31, 32, 48, 56, 60, 62, 63, 64, 83, 96, 112, 120, 124, 126, 127, 128, 166, 192, 224, 240, 248, 252, 254, 255, 256, 332, 365, 384, 448, 480, 496, 504, 508, 510, 511, 512, 664, 730, 768, 896, 960, 992, 1008, 1016, 1020, 1022, 1023, 1024, 1328, 1460, 1536, 1792, 1920, 1984, 2016
Offset: 1

Views

Author

Antti Karttunen, Nov 01 2016

Keywords

Links

Crossrefs

Complement: A277706.
Cf. A010052, A065621, A114391, A277699.
Cf. A023758 (a subsequence), A277807 (terms not in A023758).
Differs from A023758(1+n) and A077436(1+n) for the first time at n=23, for which a(23)=83, while A023758(24)=96 and A077436(24)=79.

A277805 Nonsquares in A277699 listed in the order of their appearance.

Original entry on oeis.org

57, 209, 228, 217, 233, 801, 836, 809, 912, 793, 868, 785, 1009, 932, 1017, 969, 3137, 3204, 3145, 3344, 3193, 3236, 3185, 3648, 3217, 3172, 3225, 3472, 3241, 3140, 3233, 3937, 4036, 3945, 3728, 3929, 4068, 3921, 4017, 3876, 4025, 3977, 12417, 12548, 12425, 12816, 12473, 12580, 12465, 13376, 12369, 12772, 12377, 12944, 12393, 12740, 12385
Offset: 1

Views

Author

Antti Karttunen, Nov 01 2016

Keywords

Links

Crossrefs

Cf. A277699, A277706.

Programs

Formula

a(n) = A277699(A277706(n)).
Showing 1-3 of 3 results.

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

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