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 A174479 Triangle read by rows: R(n,k)= semiprime(n) mod A065516(k), where A065516 are differences between consecutive semiprimes. 2
 0, 0, 0, 1, 0, 0, 0, 1, 0, 2, 0, 2, 0, 2, 0, 1, 0, 0, 3, 0, 3, 1, 0, 0, 1, 0, 3, 0, 0, 1, 0, 2, 0, 4, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 2, 0, 2, 0, 2, 0, 2, 0, 5, 1, 0, 0, 1, 0, 3, 0, 0, 0, 5, 0, 0, 1, 0, 2, 0, 4, 0, 1, 0, 6, 0, 0, 1, 2, 0, 3, 0, 5, 0, 2, 0, 0, 0, 0, 2 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,10 LINKS EXAMPLE The triangle starts in row n=1 with columns 1<=k<=n as: 0; 0, 0; 1, 0, 0; 0, 1, 0, 2; 0, 2, 0, 2, 0; 1, 0, 0, 3, 0, 3; MAPLE A001358 := proc(n) if n= 1 then 4; else for a from procname(n-1)+1 do if numtheory[bigomega](a) = 2 then return a; end if; end do; end if; end proc: A065516 := proc(n) A001358(n+1)-A001358(n) ; end proc: A174479 := proc(n, k) A001358(n) mod A065516(k) ; end proc: CROSSREFS Cf. A001358, A174433. Sequence in context: A103271 A029832 A320535 * A134269 A335622 A172444 Adjacent sequences:  A174476 A174477 A174478 * A174480 A174481 A174482 KEYWORD nonn,easy,tabl AUTHOR Juri-Stepan Gerasimov, Nov 28 2010 STATUS approved

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Last modified May 18 12:47 EDT 2022. Contains 353807 sequences. (Running on oeis4.)