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A286453 Compound filter: a(n) = P(A061395(n), A286465(n)), where P(n,k) is sequence A000027 used as a pairing function. 2
0, 2, 5, 11, 94, 5, 14, 254, 17, 9, 195, 47, 259, 500, 9, 11, 413, 138, 44, 303, 32, 20, 2784, 47, 354, 216, 5, 329, 506, 9, 77, 3161, 356, 35, 175, 107, 202, 2709, 216, 24, 11188, 14, 420, 356, 24, 285, 450, 498, 70, 2349, 35, 51, 115937, 5, 20, 329, 74, 310, 3420, 864, 1243, 336, 500, 11, 384, 20, 580, 47285, 87, 14, 615, 498, 1296, 3015, 9, 74, 3491, 216 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..10000

Indranil Ghosh, Python program to generate the sequence

FORMULA

a(n) = (1/2)*(2 + ((A061395(n)+A286465(n))^2) - A061395(n) - 3*A286465(n)).

PROG

(Scheme) (define (A286453 n) (* (/ 1 2) (+ (expt (+ (A061395 n) (A286465 n)) 2) (- (A061395 n)) (- (* 3 (A286465 n))) 2)))

CROSSREFS

Cf. A000027, A046523, A061395, A112049, A278223, A286356, A286372, A286452.

Sequence in context: A262228 A213073 A267527 * A018847 A178318 A134996

Adjacent sequences:  A286450 A286451 A286452 * A286454 A286455 A286456

KEYWORD

nonn

AUTHOR

Antti Karttunen, May 14 2017

STATUS

approved

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Last modified February 22 21:55 EST 2018. Contains 299469 sequences. (Running on oeis4.)