

A251704


4step Fibonacci sequence starting with 1, 1, 0, 1.


5



1, 1, 0, 1, 3, 5, 9, 18, 35, 67, 129, 249, 480, 925, 1783, 3437, 6625, 12770, 24615, 47447, 91457, 176289, 339808, 655001, 1262555, 2433653, 4691017, 9042226, 17429451, 33596347, 64759041, 124827065, 240611904, 463794357, 893992367, 1723225693
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OFFSET

0,5


LINKS



FORMULA

a(n+4) = a(n) + a(n+1) + a(n+2) + a(n+3).


MATHEMATICA



PROG

(J) NB. see A251655 for the program and apply it to 1, 1, 0, 1.


CROSSREFS

Other 4step Fibonacci sequences are A000078, A000288, A001630, A001631, A001648, A073817, A100532, A251654, A251655, A251656, A251703, A251705.


KEYWORD

nonn,easy


AUTHOR



STATUS

approved



