

A112060


Square array A(x,y) = yth natural number k for which A112049(k)=x and 0 if no such k exists; read by antidiagonals A(1,1), A(2,1), A(1,2), A(3,1), A(2,2), ...


16



1, 2, 3, 5, 4, 11, 6, 7, 12, 24, 9, 8, 23, 35, 60, 10, 15, 36, 59, 155, 84, 13, 16, 47, 95, 275, 239, 144, 14, 19, 48, 119, 335, 575, 779, 180, 17, 20, 71, 120, 359, 659, 1499, 2855, 264, 18, 27, 72, 179, 419, 839, 1535, 4199, 5279, 420, 21, 28, 83, 204, 504
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OFFSET

1,2


COMMENTS

This is a permutation of natural numbers provided that the sequence A112046 contains only prime values [which is true] and every prime occurs infinitely many times there.


LINKS

Table of n, a(n) for n=1..60.
Index entries for sequences that are permutations of the natural numbers


EXAMPLE

The top left corner of the array:
1, 2, 5, 6, 9, 10, ...
3, 4, 7, 8, 15, 16, ...
11, 12, 23, 36, 47, ...


CROSSREFS

A112070(x, y) = 2*A(X, Y)+1. Transpose: A112061. Column 1: A112051. Row 1: A042963, Row 2: A112062, Row 3: A112063, Row 4: A112064, Row 5: A112065, Row 6: A112066, Row 7: A112067, Row 8: A112068, Row 9: A112069.
Cf. also A227196.
Sequence in context: A254669 A227913 A079521 * A084933 A213900 A213648
Adjacent sequences: A112057 A112058 A112059 * A112061 A112062 A112063


KEYWORD

nonn,tabl


AUTHOR

Antti Karttunen, Aug 27 2005


STATUS

approved



