OFFSET
1,2
LINKS
Albert Tarantola, PSE of Elements (Janet form).
EXAMPLE
Starts with 1 and 2 of the first row (H and He). Next come 5 to 12 of the 3rd row (B to Mg).
MATHEMATICA
Table[Range[2 Ceiling[n/2]^2] + (# + 1) (3 + 2 #^2 + 4 # - 3 (-1)^#)/12 &[n - 1], {n, 1, 7, 2}] // Flatten (* Michael De Vlieger, Jul 21 2016 *)
CROSSREFS
KEYWORD
nonn,fini,full,less
AUTHOR
Paul Curtz, May 03 2008
EXTENSIONS
Edited by R. J. Mathar, Oct 07 2009
STATUS
approved