A363450 Partial sums of A180405.

2, 3, 7, 13, 16, 23, 31, 41, 52, 67, 79, 97, 111, 127, 149, 173, 192, 223, 251, 271, 294, 331, 367, 397, 423, 457, 486, 521, 563, 601, 641, 673, 712, 757, 809, 853, 907, 953, 1009, 1069, 1112, 1163, 1213, 1277, 1361, 1409, 1458, 1511, 1579, 1637, 1699, 1777, 1847, 1913, 1970

Offset

1,1

Comments

The construction in A180405 means that if n is in A180405, then a(n) is prime. It seems that the converse is also true: if a(n) here is prime, then n is in A180405.

Indices of composite terms are given by A363379.

Links

Neal Gersh Tolunsky, Table of n, a(n) for n = 1..10000

Neal Gersh Tolunsky, Graph of first 36568 terms

Crossrefs

Cf. A180405, A363379.

Sequence in context: A322703 A225098 A101739 * A336378 A141633 A045327

Adjacent sequences: A363447 A363448 A363449 * A363451 A363452 A363453

Keyword

nonn,easy

Author

Neal Gersh Tolunsky, Jun 02 2023

Status

approved