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A276948
First differences of A273670: a(n) = A273670(n) - A273670(n-1).
4
2, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 2, 1
OFFSET
1,1
FORMULA
a(n) = A273670(n) - A273670(n-1). [Note that the indexing of A273670 begins from zero.]
PROG
(Scheme) (define (A276948 n) (- (A273670 n) (A273670 (- n 1))))
CROSSREFS
Cf. A273670.
Cf. also A276947, A276950, A276952.
Sequence in context: A308188 A046219 A088978 * A160245 A154351 A112753
KEYWORD
nonn,base
AUTHOR
Antti Karttunen, Sep 22 2016
STATUS
approved