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A071054 Number of 1's in n-th row of triangle in A071037. +0
1
1, 3, 4, 5, 7, 7, 10, 9, 13, 11, 16, 13, 19, 15, 22, 17, 25, 19, 28, 21, 31, 23, 34, 25, 37, 27, 40, 29, 43, 31, 46, 33, 49, 35, 52, 37, 55, 39, 58, 41, 61, 43, 64, 45, 67, 47, 70, 49, 73, 51, 76, 53, 79, 55, 82, 57, 85, 59, 88, 61, 91, 63, 94, 65, 97, 67, 100, 69 (list; graph; listen)
OFFSET

0,2

REFERENCES

S. Wolfram, A New Kind of Science, Wolfram Media, 2002; Chapter 3.

LINKS

Index entries for sequences related to cellular automata

FORMULA

G.f.: (-x^3+2x^2+3x+1)/(1-x^2)^2.

CROSSREFS

Cf. A029578.

Adjacent sequences: A071051 A071052 A071053 this_sequence A071055 A071056 A071057

Sequence in context: A083400 A056190 A049465 this_sequence A033545 A055495 A072442

KEYWORD

nonn

AUTHOR

Hans Havermann (pxp(AT)rogers.com), May 26 2002

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.


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