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

Author

Antti Karttunen, Mar 12 2019

Keywords

• nonn

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).