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A243501
Permutation of even numbers: a(n) = 2*A048673(n).
11
2, 4, 6, 10, 8, 16, 12, 28, 26, 22, 14, 46, 18, 34, 36, 82, 20, 76, 24, 64, 56, 40, 30, 136, 50, 52, 126, 100, 32, 106, 38, 244, 66, 58, 78, 226, 42, 70, 86, 190, 44, 166, 48, 118, 176, 88, 54, 406, 122, 148, 96, 154, 60, 376, 92, 298, 116, 94, 62, 316, 68, 112, 276, 730, 120
OFFSET
1,1
LINKS
FORMULA
a(n) = 2*A048673(n).
a(n) = A003961(n) + 1.
a(n) = A243502(A245447(n)).
PROG
(Scheme, two different versions)
(define (A243501 n) (+ 1 (A003961 n)))
(define (A243501v2 n) (* 2 (A048673 n)))
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jul 21 2014
STATUS
approved