Number of n X 2 1..5 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in increasing order.

A166816

Number of n X 2 1..5 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in increasing order.

Terms

    a(0) =0a(1) =0a(2) =105a(3) =767a(4) =3159a(5) =9751a(6) =25148a(7) =57258a(8) =118866a(9) =229698a(10) =419067a(11) =729201a(12) =1219361a(13) =1970865a(14) =3093142a(15) =4730948a(16) =7072884a(17) =10361364a(18) =14904189a(19) =21087891a(20) =29393019a(21) =40411547a(22) =54866592a(23) =73634638a(24) =97770470a(25) =128535030

External references