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A057061 Let R(i,j) be the rectangle with antidiagonals 1; 2,3; 4,5,6; ...; each k is an R(i(k),j(k)) and A057058(n)=j(n-th prime)). 1
2, 1, 2, 4, 5, 3, 5, 3, 6, 8, 6, 9, 5, 3, 9, 3, 8, 6, 12, 8, 6, 13, 9, 3, 9, 5, 3, 14, 12, 8, 10, 6, 17, 15, 5, 3, 15, 9, 5, 18, 12, 10, 20, 18, 14, 12, 21, 9, 5, 3, 21, 15, 13, 3, 20, 14, 8, 6, 24, 20, 18, 8, 19, 15, 13, 9, 21, 15, 5, 3, 26, 20, 12, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

R(i,j)=C(i+j-1,2)+i; cf. A000027, A057060.

LINKS

Table of n, a(n) for n=1..74.

CROSSREFS

Sequence in context: A292601 A301364 A309503 * A307729 A245660 A034804

Adjacent sequences:  A057058 A057059 A057060 * A057062 A057063 A057064

KEYWORD

nonn

AUTHOR

Clark Kimberling, Jul 30 2000

STATUS

approved

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Last modified December 13 06:26 EST 2019. Contains 329968 sequences. (Running on oeis4.)