A075728 Records in abs(sigma(n)-2*n) (absolute value of A033879).

1, 2, 4, 6, 10, 12, 16, 18, 22, 28, 30, 36, 40, 42, 46, 52, 58, 60, 66, 70, 72, 78, 82, 88, 96, 100, 102, 106, 108, 112, 120, 126, 130, 136, 138, 148, 150, 156, 162, 166, 172, 178, 186, 190, 192, 196, 198, 210, 222, 226, 228, 232, 238, 264, 268, 270, 276, 280, 282, 292, 306

Offset: 1

Author

N. J. A. Sloane, Oct 03 2002

Keywords

• nonn

Comments

RECORDS transform of |A033879|.

Links

• R. J. Mathar and Donovan Johnson, Table of n, a(n) for n = 1..1000 (first 220 terms from R. J. Mathar)
• N. J. A. Sloane, Transforms

Crossrefs

Cf. A033879, A074918. Different from A006093.

Programs

PARI

lista(nn) = {rec = -1; for (n=1, nn, d = abs(sigma(n) - 2*n); if (d > rec, print1(d, ", "); rec = d;););} \\ Michel Marcus, Nov 02 2013

Extensions

Corrected name, Michel Marcus, Nov 02 2013