A246263 - OEIS

A246263

Numbers n such that A003961(n) is of the form 4k+3.

2, 5, 6, 7, 8, 15, 17, 18, 19, 20, 21, 22, 24, 26, 28, 29, 32, 41, 43, 45, 46, 50, 51, 53, 54, 55, 57, 60, 61, 62, 63, 65, 66, 67, 68, 70, 72, 73, 74, 76, 77, 78, 79, 80, 84, 87, 88, 91, 94, 96, 98, 101, 103, 104, 112, 113, 115, 116, 118, 123, 125, 127, 128, 129, 135, 137, 138, 142, 149, 150

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Equally: numbers n for which A048673(n) is even.

Also, after the first term (2), numbers n for which A243062(n) is odd.

Numbers that occur below the topmost row of square array A246259.

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..10001

PROG

(Scheme, with Antti Karttunen's IntSeq-library)

(define A246263 (MATCHING-POS 1 1 (lambda (n) (= 3 (modulo (A003961 n) 4)))))