A382717 -id:A382717 - cp's OEIS frontend

A382718 Numbers missing from A382717.

4, 13, 25, 45, 53, 62, 72, 81, 84, 115, 118, 143, 145, 152, 161, 164, 170, 173, 182, 187, 192, 197, 214, 223, 228, 234, 248, 265, 272, 275, 283, 294, 302, 307, 312, 317, 319, 323, 329, 332, 341, 344, 350, 353, 355, 365, 375, 379, 382, 385, 400, 445, 455, 459, 462, 465, 480, 483, 487, 492

Offset: 1

N. J. A. Sloane, Apr 13 2025

nonn

Rémy Sigrist, Table of n, a(n) for n = 1..7338
Rémy Sigrist, C++ program

Complement of A382717.

Cf. A377091, A382715, A382716, A379789.

A382715 The term in A377091 that immediately precedes n, or 0 if n does not appear in A377091.

Original entry on oeis.org

0, 1, -1, 3, 4, -3, 6, 7, 13, 9, 10, 11, -12, 18, 14, 15, 16, -18, 20, 21, 25, 23, 19, 28, -24, 22, 26, 27, 30, 31, 32, -32, 29, 33, 34, 35, 36, 37, 38, 39, 40, -39, 42, 43, 44, 45, 46, 47, 48, 49, -49, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, -59, 62, 63, 64, 65

Offset: 1

N. J. A. Sloane, Apr 09 2025

sign

It is a strong conjecture that every integer appears in A377091, so it is unlikely there will be a second 0 term.

			A377091(9) = -3 is followed by A377091(10) = 6, so a(6) = -3.

N. J. A. Sloane, Table of n, a(n) for n = 1..10060
N. J. A. Sloane, Table of n, a(n) for n = 1..125060

Cf. A377091, A379059, A379789, A382716, A382717, A382718.

A382716 a(n) = n - A382715(n).

Original entry on oeis.org

1, 1, 4, 1, 1, 9, 1, 1, -4, 1, 1, 1, 25, -4, 1, 1, 1, 36, -1, -1, -4, -1, 4, -4, 49, 4, 1, 1, -1, -1, -1, 64, 4, 1, 1, 1, 1, 1, 1, 1, 1, 81, 1, 1, 1, 1, 1, 1, 1, 1, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 121, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 144, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, -1, -1, -1, -9, 4, 1, 1, 1, 1, 1, 1, 1, 196, -1, -4, -1, -1, 4, -9

Offset: 1

N. J. A. Sloane, Apr 09 2025

sign

Assuming that every integer appears in A377901, a(n) gives an indication of how difficult it was for the positive integer n to appear there.

(The definition of A377091 implies that |a(n)| is a square.)

N. J. A. Sloane, Table of n, a(n) for n = 1..10059

Cf. A377091, A382715.

For RECORDS, see A382717, A382718, A379789.

cp's OEIS Frontend

A382718 Numbers missing from A382717.

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A382715 The term in A377091 that immediately precedes n, or 0 if n does not appear in A377091.

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A382716 a(n) = n - A382715(n).

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