A324720 Positions of nonnegative terms in A323244; numbers n for which 2*A156552(n) >= A323243(n).

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 36, 37, 38, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50, 51, 52, 53, 54, 56, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 78, 79, 80, 82, 83, 84, 86, 88, 89, 90, 92, 93, 94, 96, 97, 98, 100

Offset

1,2

Comments

These correspond to nonabundant numbers as the terms after the initial 1 are obtained by sorting the sequence A005940(1+A263837(n)) into ascending order.

Links

Antti Karttunen, Table of n, a(n) for n = 1..7679 (based on Hans Havermann's factorization of A156552)

Index entries for sequences computed from indices in prime factorization

Index entries for sequences related to sigma(n)

Crossrefs

Cf. A005940, A156552, A263837, A323243, A323244.

Cf. A324551 (complement), A324201, A324721 (subsequences).

Sequence in context: A135579 A250251 A138234 * A247756 A032520 A034837

Adjacent sequences: A324717 A324718 A324719 * A324721 A324722 A324723

Keyword

nonn

Author

Antti Karttunen, Mar 12 2019

Status

approved