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A077655 Number of consecutive successors of n having the same number of prime factors as n (counted with multiplicity). 3
0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 2, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 0, 0, 0, 0, 0, 0, 2, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,33

COMMENTS

If a(n)>0 then a(n+1)=a(n)-1.

LINKS

Table of n, a(n) for n=1..105.

EXAMPLE

33=3*11 has only two successors also with two factors: 34=2*17 and 35=5*7 (whereas 33+3=36=2*2*3*3), therefore a(33)=2.

CROSSREFS

Cf. A001222, A077656, A045920, A045939, A045940, A045941, A045942, A077657.

Sequence in context: A073797 A037856 A037874 * A117886 A145723 A085977

Adjacent sequences:  A077652 A077653 A077654 * A077656 A077657 A077658

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Nov 13 2002

STATUS

approved

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Last modified November 13 12:45 EST 2019. Contains 329094 sequences. (Running on oeis4.)