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A107849 G.f. (x+1)^2/((1-x^2-2*x^3)*(x^4+1)). 5
1, 2, 2, 4, 5, 6, 12, 16, 25, 42, 58, 92, 141, 206, 324, 488, 737, 1138, 1714, 2612, 3989, 6038, 9212, 14016, 21289, 32442, 49322, 75020, 114205, 173662, 264244, 402072, 611569, 930562, 1415714, 2153700, 3276837, 4985126, 7584236, 11538800 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..39.

FORMULA

a(n) = A052947(n+2) + A014017(n+6). [Ralf Stephan, Nov 30 2010]

PROG

Floretion Algebra Multiplication Program, FAMP Code: 1tesforzapseq[(.5i' + .5j' + .5'ki' + .5'kj')*(.5'i + .5'j + .5'ik' + .5'jk')]

CROSSREFS

Cf. A107850, A107851, A107852.

Sequence in context: A232166 A138883 A257632 * A053036 A067957 A120326

Adjacent sequences:  A107846 A107847 A107848 * A107850 A107851 A107852

KEYWORD

easy,nonn

AUTHOR

Creighton Dement, May 25 2005

STATUS

approved

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Last modified May 29 22:45 EDT 2017. Contains 287257 sequences.