A048951 (2,4) Ulam sequence

2, 4, 6, 8, 12, 16, 22, 26, 32, 36, 52, 56, 72, 76, 94, 96, 106, 114, 124, 138, 144, 154, 164, 174, 194, 198, 204, 212, 228, 252, 262, 276, 290, 296, 310, 350, 354, 360, 364, 378, 394, 412, 418, 438, 442, 472, 476, 482, 486, 506, 516, 520, 546, 564, 618, 632

Offset

1,1

Comments

This sequence is 2*A002858, since in general U(k*m, k*n) = k * U(m, n), where U(m, n) is the (m, n)-Ulam sequence. - Enrique Navarrete, May 05 2017

Links

Reinhard Zumkeller, Table of n, a(n) for n = 1..1000

Eric Weisstein's World of Mathematics, Ulam Sequence

Wikipedia, Ulam number

Index entries for Ulam numbers

Prog

(Haskell)
a048951 n = a048951_list !! (n-1)
a048951_list = 2 : 4 : ulam 2 4 a048951_list
-- Function ulam as defined in A002858.
-- Reinhard Zumkeller, Nov 03 2011

Crossrefs

Cf. A002858.

Sequence in context: A008764 A228354 A065386 * A326504 A058629 A323508

Adjacent sequences: A048948 A048949 A048950 * A048952 A048953 A048954

Keyword

nonn,changed

Author

Eric W. Weisstein

Status

approved